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Problems paintg lines as a pencil

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Silvia
Silvia 2013-6-15
I have a problem.
I have an image and over this image I am painting lines,as drawing with a pencil ,using the plot function p=plot(x,y). However, if I have drawn a first line and I try to draw another line, starting over the first line, the new one it doesn't appear.
I mean, If I click with the mouse over one line it doen't appear the new one.However if I click over any point on the image it appears.
Why can this happens?
Thanks

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Walter Roberson
Walter Roberson 2013-6-15
The newly drawn line would probably have HitTest 'on', so clicking on it would active the callback for the line (probably none) instead of the callback for the image. When you put the line into place, turn its HitTest off.

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